Noctua orbona, the lunar yellow underwing, is a moth of the family Noctuoidea. It is found in the Palearctic.

Distribution

North Africa (Morocco and Libya), Western, Central and southern Europe. Inn the North to Scotland, southern Norway, central Sweden and southern Finland. From the Baltic States across through Russia to the Urals. In Asia, the southern records extend from Turkey, Syria, Lebanon, Iraq and questionably to Iran, Afghanistan and Northern India. The distribution area in the East Palearctic includes Kazakhstan, Turkmenistan, Tajikistan, Kyrgyzstan and Uzbekistan.


Comparison 1, 2. Lunar yellow underwing Noctua orbona 4, 5, 7, 8. Lesser yellow underwing Noctua comes 3, 6. Large yellow underwing Noctua pronuba
The wingspan is 38–45 mm. Forewings with weakly pronounced lines, the colour is leather yellowish brown to reddish brown, often obscured at the margin. It resembles Noctua comes but has a constant and characteristic ink black spot on the costa near the apex of the forewing.In the overall impression a broad-winged species. Central European populations on average smaller than Noctua comes.


The moth flies from June to September depending on the location.

The larvae feed on various herbaceous plants and grasses.